20 questions
What is 1 insulator of thermal energy?
Rubber
Cotton string
Metal
Glass rod
What is NOT a conductor of electrical energy?
Paper
Penny
Water
Aluminum
Can a conductor sometimes be an insulator of electrical energy?
True
False
Can an electrical conductor be a thermal conductor?
True
False
Sometimes
What is the best metal conductor of thermal energy?
aluminum
copper
iron
silver
What is the best insulator of electricity
glass
silver
copper
alumminum
Which of these answers is NOT a conductor at all?
Cotton
Steel
Uranium
Platinum
Which metal is a good insulator for thermal energy?
Iron
Steel
Aluminum
All of the above
What is a more common metal conductor?
Silver
Copper
Iron
Gold
Iron is the best thermal conductor
True
False
What is glass, a conductor or an insulator with heat?
Conductor
Insulator
Both
Does a conductor let energy flow through?
True
False
Is metal a conductor or an insulator of electricity?
Conductor
Insulator
Both
Does an insulator stop the flow of energy?
True
False
Which of these are insulators of heat?
Wood
Paper
Rubber
All of the above
Is rubber a conductor of thermal energy?
Yes
No
A student is asked to design a sleeve for a cup that will insulate thermal energy and not feel hot to the touch when the cup is filled with hot liquid. The student has four materials to choose from. Which of these materials is least useful as an insulator?
Cardboard
Aluminum
Rubber
Plastic
Two wires carrying electricity can create a spark if they come too close together. This spark can start a fire. Wires carrying electricity are usually covered with plastic to keep them from starting a fire. Why does the plastic keep the electricity from starting a fire?
Plastic is a good insulator
Plastic is a good conductor
Plastic can melt when heat
Plastic is softer than wire
A student wanted to make a circuit ,but didn't have enough wire. What object will replace the wire?
Rubber
Plastic
Paper
Silver
What is the difference between conductors and insulators?
A conductor does not let the energy flow and the insulator does
There both the same
A conductor lets the energy flow and an insulator doesn't